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From: Preben Randhol <randhol+abuse@pvv.org>
Newsgroups: comp.lang.ada
Subject: Re: Side-Effects in Functions [Rosen Trick]
Date: Mon, 5 Nov 2001 15:21:13 +0000 (UTC)
Organization: Norwegian university of science and technology
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On Mon, 05 Nov 2001 14:59:15 GMT, Dmitry A. Kazakov wrote:
> On 5 Nov 2001 03:19:39 -0800, pete@nospam <pete_member@newsguy.com>
> wrote:
> 
> procedure Find (Folder : in out Table) return Table_Token;
> 
> with
> 
> procedure Find (Folder : in out Table; Result : out Table_Token);
> 
> The difference between them is rather syntactical. Semantically they

Yes and I don't understand why you want it. What if you expect to change
two wariables in the procedure like:

procedure Find (Folder : in out Table; Result : out Table_Token; 
                Unique : out Boolean);

to do it like: 

procedure Find (Folder : in out Table; Unique : out Boolean) return Table_Token;

looks a bit messy I think.

What is the difference between a function with in out and a procedure
with a return value? It amounts to the same thing I think.

Preben